Consulta: subjectFacets:"Influenza"
Registros recuperados: 20
Data/hora: 01/06/2024 00:45:14

Wild Bird Movements and Avian Influenza Risk Mapping in Southern Africa
Provedor de dados: 7
Autores: Cumming, Graeme S.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; graeme.cumming@uct.ac.za; Hockey, Philip A. R.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; phil.hockey@uct.ac.za; Bruinzeel, Leo W.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; lbruinze@adu.uct.ac.za; Du Plessis, Morne A.; Percy FitzPatrick Institute, DST/NRF Center of Excellence, University of Cape Town, Rondebosch, 7701, South Africa; mornedup@vodamail.co.za.
Global analyses of the potential for avian influenza transmission by wild birds have ignored key characteristics of the southern African avifauna. Although southern Africa hosts a variety of migratory, Holarctic-breeding wading birds and shorebirds, the documented prevalence of avian influenza in these species is low. The primary natural carriers of influenza viruses in the northern hemisphere are the anatids, i.e., ducks. In contrast to Palearctic-breeding species, most southern African anatids do not undertake predictable annual migrations and do not follow migratory flyways. Here we present a simple, spatially explicit risk analysis for avian influenza transmission by wild ducks in southern Africa. We developed a risk value for each of 16 southern...
Tipo: Peer-Reviewed Reports
Palavras-chave: Anatidae; Avian influenza; Botswana; Ducks; Influenza; Landscape ecology; Namibia; Pathogen; South Africa; Virus; Waterfowl; Zimbabwe.
Ano: 2008

Risk Mapping for Avian Influenza: a Social&amp;#8211;Ecological Problem
Provedor de dados: 7
Autores: Cumming, Graeme S.; Percy FitzPatrick Institute, DST/NRF Centre of Excellence, University of Cape Town; graeme.cumming@uct.ac.za.
Pathogen dynamics are inseparable from the broader environmental context in which pathogens occur. Although some pathogens of people are primarily limited to the human population, occurrences of zoonoses and vector-borne diseases are intimately linked to ecosystems. The emergence of these diseases is currently being driven by a variety of influences that include, among other things, changes in the human population, long-distance travel, high-intensity animal-production systems, and anthropogenic modification of ecosystems. Anthropogenic impacts on ecosystems have both direct and indirect (food-web mediated) effects. Therefore, understanding disease risk for zoonoses is a social&amp;#8211;ecological problem.   The articles in this special feature focus on...
Tipo: Peer-Reviewed Reports
Palavras-chave: Disease; Framework; Health; Influenza; Pathogen; Resilience; Social&amp;#8211; Ecological system.
Ano: 2010

Influenza: a gripe no meio rural
Provedor de dados: 14
Autores: JAENISCH, F. R. F.; TREVISOL, I. M.; SILVA, J. C. R. da; SANTOS, M. S. V.; OLIVEIRA, P. A. V. de; DUBOIS, R.
Educação para enfrentamento das gripes aviária, suína e equina
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Gripe H1N1; Prevenção; Gripe A; Agricultura Familiar; Influenza.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/662390

Influenza: a gripe no meio rural: educação para enfrentamento das gripes aviária, suína e equina: manual do extencionista.
Provedor de dados: 14
Autores: JAENISCH, F. R. F.; TREVISOL, I. M.; SILVA, J. C. R. da; SANTOS, M. S. V.; OLIVEIRA, P. A. V. de; DUBOIS, R.
bitstream/item/199641/1/A-gripe-no-meio-rural.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Gripe H1N1; Prevenção; Gripe A; Agricultura Familiar; Influenza.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/662408

Pandemias de influenza e o papel do suíno.
Provedor de dados: 14
Autores: ZANELLA, J. R. C.; GOSLAR, M. S.
Tipo: Artigo de periódico
Palavras-chave: Pandemia; Emergência sanitária; Saúde global; Suíno; Influenza.
Ano: 2022
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1143222

Knowledge and attitudes of health care workers from intensive care units regarding nosocomial transmission of influenza: a study on the immediate pre-pandemic period
Provedor de dados: 80
Autores: Fortaleza,CR; Fortaleza,CMCB.
The transmission of influenza in health care settings is a major threat to patients, especially those with severe diseases. The attitude of health care workers (HCWs) may influence the transmission of countless infections. The current study aimed to quantify knowledge and identify attitudes of HCWs involved in intensive care units (ICUs) regarding the risk of nosocomial influenza transmission. A questionnaire was applied through interviews to HCWs who worked in one of the five ICUs from a teaching hospital. Questions about influenza were deliberately dispersed among others that assessed several infectious agents. Forty-two HCWs were interviewed: nine physicians, ten nurses and 23 nursing technicians or auxiliaries. Among the 42 HCWs, 98% were aware of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Health care-acquired infections; Health care workers; Intensive care units; Vaccination.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000200007

EQUINE '98, PART III: MANAGEMENT AND HEALTH OF HORSES, 1998
Provedor de dados: 31
Autores: Garber,   Lindsey.
The National Animal Health Monitoring System (NAHMS) is sponsored by the USDA:APHIS:Veterinary Services (VS). The NAHMS Equine '98 Study was designed to provide information about the nation's equine population. Twenty-eight states were included in the study.  The USDA's National Agricultural Statistics Service (NASS) collaborated with VS to select a statistically-valid sample such that inferences could be made to all equids and operations with equids in the 28 states. For the purposes of the study, equids included domestic horses, miniature horses, ponies, donkeys/burros, and mules. For Part III of the study, data were collected by Federal and State Veterinary Medical Officers and Animal Health Technicians between March 16, 1998, to April 10, 1998, from...
Tipo: Report
Palavras-chave: NAHMS; Horse; Epidemiology; Health; Disease; Vaccination; Stall management; Hoof care; Parasites; Tetanus; Influenza; Encephalitis; Influenza; Herpes virus; Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/32745

DESARROLLO DE CONTROLES POSITIVOS PARA MÉTODOS MOLECULARES DE DETECCIÓN DE VIRUS DE INFLUENZA AVIAR
Provedor de dados: 101
Autores: Acevedo,Ana María; Santana,Elaine; Díaz de Arce,Heidy; Pérez,L.J; Caballero,A; Suárez,L; Sánchez,O.
La influenza aviar (IA) constituye una gran amenaza para la salud animal y humana por lo que es una prioridad a nivel mundial el fortalecimiento de los sistemas de diagnóstico frente a probables brotes, de ahí la importancia de la detección por métodos moleculares (RT-PCR y Real time RT-PCR) por su elevada rapidez, sensibilidad y especificidad de estos que permiten tomar las medidas de control para evitar la diseminación del agente. En este trabajo se describe la obtención y evaluación de controles positivos de amplificación y cuantificación para RT-PCR y Real time RT-PCR (RRT-PCR) obtenidos a partir del clonaje de dos productos de PCR, uno correspondiente a una región del gen de la hemaglutinina del subtipo H5 y el otro al gen de la matriz (M) para...
Tipo: Journal article
Palavras-chave: Influenza aviar; Controles positivos de amplificación y cuantificación; Diagnóstico molecular; Influenza.
Ano: 2009
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2009000100010

Respiratory syncytial virus causes more hospitalizations and deaths in equatorial Brazil than influenza (including during the 2009 pandemic)
Provedor de dados: 42
Autores: ALONSO,WLADIMIR J.; TAMERIUS,JAMES; FREITAS,ANDRÉ R.R.
Abstract  Despite numerous studies evaluating influenza and Respiratory Syncytial Virus (RSV), there is still a lack of knowledge about them, especially in tropical countries. We compared the relative importance of respiratory viruses by examining their spatiotemporal patterns, age-specific hospitalization data and mortality data for 2007-2012 obtained from official sources. The data were aggregated into “respiratory infection seasonal zones” formed combining states that had similar seasonal patterns of pneumonia and influenza (P&amp;I). Equatorial-North where P&amp;I peaks in the middle of the year, Equatorial-South where P&amp;I peaks in the first semester and coincides with the rainy-season, Subtropical where P&amp;I peaks are clearly concentrated in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Disease burden; Influenza; RSV; Seasonality; Pandemic; 2009pdm.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100904

Patterns of influenza infections among different risk groups in Brazil
Provedor de dados: 55
Autores: Bellei,Nancy; Carraro,Emerson; Perosa,Ana; Granato,Celso.
Influenza virus infections are associated with high morbidity and mortality. Influenza activity varies worldwide, and regional detection is influenced by geographic conditions, demographic and patient-risk factors. We assessed influenza activity and patterns of seasonality during three consecutive years (2001-2003) in three risk groups in São Paulo city. Four-hundred-twelve outpatients with acute respiratory infection were subjected to epidemiological, clinical and laboratory investigations; these included community population (N=140), health-care workers (N=203), and renal-transplanted patients (N=69). Nasal wash samples were tested by direct fluorescent assay for influenza, parainfluenza, adenovirus, and respiratory syncytial virus. Overall Influenza...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Risk groups; Respiratory viral infection.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000400005

Sentinel surveillance of influenza and other respiratory viruses, Brazil, 2000-2010
Provedor de dados: 55
Autores: Freitas,Felipe Teixeira de Mello.
There are scanty data on the epidemiology of influenza and other respiratory viruses in South America and Brazil. The aim of this study was to summarize the data from the Brazilian surveillance system of influenza and other respiratory viruses and discuss the patterns of viral circulation. The system is based on detecting cases of influenza-like illness in sentinel sites and weekly collection of five nasopharyngeal secretions samples, which are processed in state public health laboratories for respiratory viruses by indirect immunofluorescence assay. Data from 2000 to 2010 were described over time, by region, gender, and age group, and an analysis of Spearman correlation was performed between monthly influenza detection and rainfall and temperature data in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Respiratory syncytial virus; Public health surveillance; Brazil.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000100010

Cost-utility of quadrivalent versus trivalent influenza vaccine in Brazil – comparison of outcomes from different static model types
Provedor de dados: 55
Autores: Van Bellinghen,Laure-Anne; Marijam,Alen; de Araujo,Gabriela Tannus Branco; Gomez,Jorge; Van Vlaenderen,Ilse.
ABSTRACT  Background: Influenza burden in Brazil is considerable with 4.2–6.4 million cases in 2008 and influenza-like-illness responsible for 16.9% of hospitalizations. Cost-effectiveness of influenza vaccination may be assessed by different types of models, with limitations due to data availability, assumptions, and modelling approach.  Objective: To understand the impact of model complexity, the cost-utility of quadrivalent versus trivalent influenza vaccines in Brazil was estimated using three distinct models: a 1-year decision tree population model with three age groups (FLOU); a more detailed 1-year population model with five age groups (FLORA); and a more complex lifetime multi-cohort Markov model with nine age groups (FLORENCE).  Methods: Analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Brazil; Cost-effectiveness; Vaccination; QIV; TIV.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000100001

Influenza A and B in a cohort of outpatient children and adolescent with influenza like-illness during two consecutive influenza seasons
Provedor de dados: 55
Autores: Machado,Clarisse M.; de Souza,Ana Carolina Mamana Fernandes; Romano,Camila Malta; dos Santos Freire,Wilton; Costa,Ângela Aparecida; Figueiredo,Walter Manso; Pannuti,Cláudio S.; Luna,Expedito J.A.
ABSTRACT  Introduction Influenza is an important cause of morbimortality worldwide. Although people at the extremes of age have a greater risk of complications, influenza has been more frequently investigated in the elderly than in children, and inpatients than outpatients. Yearly vaccination with trivalent or quadrivalent vaccines is the main strategy to control influenza.  Objectives Determine the clinical and molecular characteristics of influenza A and B infections in children and adolescents with influenza-like illness (ILI).  Methods: A cohort of outpatient children and adolescents with ILI was followed for 20 months. Influenza was diagnosed with commercial multiplex PCR platforms.  Results: 179 patients had 277 episodes of ILI, being 79 episodes of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Outpatient; Children; Vaccine; Lineages; Phylogeny; Cohort.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702020000100073

The influenza season 2016/17 in Bucharest, Romania – surveillance data and clinical characteristics of patients with influenza-like illness admitted to a tertiary infectious diseases hospital
Provedor de dados: 55
Autores: Drăgănescu,Anca; Săndulescu,Oana; Florea,Dragoş; Vlaicu,Ovidiu; Streinu-Cercel,Anca; Oţelea,Dan; Aramă,Victoria; Luminos,Monica Luminiţa; Streinu-Cercel,Adrian; Niţescu,Maria; Ivanciuc,Alina; Bacruban,Rodica; Piţigoi,Daniela.
ABSTRACT  Background: Influenza continues to drive seasonal morbidity, particularly in settings with low vaccine coverage.  Objectives: To describe the influenza cases and viral circulation among hospitalized patients.  Methods: A prospective study based on active surveillance of inpatients with influenza-like illness from a tertiary hospital in Bucharest, Romania, in the season 2016/17.  Results: A total of 446 patients were tested, with a balanced gender distribution. Overall, 192 (43%) patients tested positive for influenza, with the highest positivity rate in the age groups 3–13 years and &gt;65 years. Peak activity occurred between weeks 1 and 16/2017, with biphasic distribution: A viruses were replaced by B viruses from week 9/2017; B viruses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: A/H3; B/Victoria; ILI; Influenza; SARI; Subtype.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702018000500377

Immunogenicity and safety of Southern Hemisphere inactivated quadrivalent influenza vaccine: a Phase III, open-label study of adults in Brazil
Provedor de dados: 55
Autores: Zerbini,Cristiano A.F.; Ribeiro dos Santos,Rodrigo; Jose Nunes,Maria; Soni,Jyoti; Li,Ping; Jain,Varsha K.; Ofori-Anyinam,Opokua.
Abstract The World Health Organization influenza forecast now includes an influenza B strain from each of the influenza B lineages (B/Yamagata and B/Victoria) for inclusion in seasonal influenza vaccines. Traditional trivalent influenza vaccines include an influenza B strain from one lineage, but because two influenza B lineages frequently co-circulate, the effectiveness of trivalent vaccines may be reduced in seasons of influenza B vaccine-mismatch. Thus, quadrivalent vaccines may potentially reduce the burden of influenza compared with trivalent vaccines.In this Phase III, open-label study, we assessed the immunogenicity and safety of Southern Hemisphere inactivated quadrivalent influenza vaccine (Fluarix™ Tetra) in Brazilian adults (NCT02369341). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quadrivalent; Influenza; Vaccine; Immunogenicity; Safety; Brazil; Adults.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100063

Risk factors for poor immune response to influenza vaccination in elderly people
Provedor de dados: 55
Autores: Bellei,N.C.J.; Carraro,E.; Castelo,A.; Granato,C.F.H.
Influenza vaccination of elderly people is efficacious and cost effective for the prevention of influenza and its complications. Some studies have pointed out low immunogenicity in this group. Health status has been poorly investigated as a risk factor that may influence the immune response to influenza vaccine. We established an immunization response study of a highly-matched elderly population in a nursing home. One-hundred-twenty subjects of Ashkenazian origin had their vaccine-induced antibody response assessed. Good response was obtained in 30.8% (37/120), and 31.7% (38/120) did not react. A lack of good response was found to be associated with dementia (P=0.016) in a multivariate analysis. In addition to dementia, malnutrition was frequently observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Vaccination; Immune response; Risk factors; Dementia.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000400011

Connections: can the 20th century coronary heart disease epidemic reveal something about the 1918 influenza lethality?
Provedor de dados: 56
Autores: Azambuja,M.I.
This essay proposes that the ecologic association shown between the 20th century coronary heart disease epidemic and the 1918 influenza pandemic could shed light on the mechanism associated with the high lethality of the latter. It suggests that an autoimmune interference at the apoB-LDL interface could explain both hypercholesterolemia and inflammation (through interference with the cellular metabolism of arachidonic acid). Autoimmune inflammation, then, would explain the 1950s-60s acute coronary events (coronary thrombosis upon influenza re-infection) and the respiratory failure seen among young adults in 1918. This hypothesis also argues that the lethality of the 1918 pandemic may have not depended so much on the 1918 virus as on an immune vulnerability...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Respiratory distress syndrome; Autoimmunity; Influenza; Coronary disease; Disease susceptibility; Disease outbreaks.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000100001

Application of various antioxidants in the treatment of influenza
Provedor de dados: 56
Autores: Dolganova,A.; Sharonov,B.P.
We determined the effect of the antioxidants superoxide dismutase, desferrioxamine and allopurinol on the survival of male CBA mice infected intranasally with 2-5 LD50 lung influenza virus A/Aichi/2/68. Survival for at least 20 days was observed for 45% of the mice that received 1000 U/day superoxide dismutase prepared from red blood cells on days 5, 6, 7 and 8 after infection, and 75% survival was observed for mice that received the same dose on days 4, 5, 6, 7 and 8. Desferrioxamine, 25 mg/kg per day and 100 mg/kg per day injected subcutaneously, resulted in survival rates of 5 and 0%, respectively, compared to 10% survival observed for saline-injected controls. Allopurinol at doses of 5 to 50 mg/kg per day had no effect on mouse survival. These data...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Free radicals; Influenza; Antioxidant; Desferrioxamine; Superoxide dismutase; Allopurinol.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001100012

Anti-influenza A virus antibodies in Tayassuidae from commercial rearing farms in Brazil
Provedor de dados: 65
Autores: Baraldi,Thaís Gasparini; Almeida,Henrique Meiroz de Souza; Morais,Amanda Bonalume Cordeiro de; Storino,Gabriel Yuri; Montassier,Hélio José; Motta,Rodrigo Garcia; Ribeiro,Márcio Garcia; Oliveira,Luís Guilherme de.
ABSTRACT:  Family Tayassuidae in the suborder Suina include two species of peccaries in Brazil: the white-lipped peccary (Tayassu pecari) and the collared peccary (Pecari tajacu). These animals share common pathogens with domestic swine (Sus scrofa); however, their role as potential carrier remains unclear. This study focused on detecting the prevalence of influenza A antibodies in Tayassu pecari and Pecari tajacu from commercial rearing farms from two states in Brazil. A set of 50 blood samples from Pecari tajacu and 55 from Tayassu pecari were analyzed using a commercial indirect ELISA in order to investigate anti influenza A antibodies. Pecari tajacu samples presented 22% (11/50) of seropositivity for the virus. Serological surveillance is an important...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Influenza; Antibodies; Peccaries.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000400451

Prevalência de anticorpos para o vírus da Influenza Eqüina, subtipo H3N8, em eqüídeos apreendidos no Estado do Rio de Janeiro
Provedor de dados: 65
Autores: Oliveira,Gabrielle Sales de; Schiavo,Paula Amorim; Mazur,Carlos; Andrade,Cláudio de Moraes.
O vírus Influenza A, subtipo H3N8, é o agente etiológico da Influenza Eqüina, responsável por diversas epidemias e endemias respiratórias em nível mundial, inclusive no Estado do Rio de Janeiro, Brasil. O objetivo deste trabalho foi avaliar a importância de eqüídeos errantes, como fontes de infecção do vírus Influenza, subtipo H3N8. A enquete foi realizada a partir da pesquisa de anticorpos específicos para este vírus em 1106 soros analisados através da prova de inibição da hemaglutinação. O elevado percentual (35,9%) de animais soropositivos encontrados evidencia seu papel como uma importante fonte de infecção deste vírus para o rebanho eqüino nacional.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eqüídeos; Influenza; H3N8; Sorologia.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000500038